diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1bf33de..258b1243 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -62,7 +62,7 @@ jobs:
           components: rustfmt,clippy
 
       - name: Install Rust tools
-        uses: taiki-e/install-action@fd2f5e3d644b484055ebf4268f474c565f148f25 # v2.81.9
+        uses: taiki-e/install-action@1168f6810a3cb30a3514bf5756a3b7f0422c6df8 # v2.87.28
         with:
           tool: just,cargo-nextest
 
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 8f80034b..a5e13aa8 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -23,7 +23,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+        uses: cachix/install-nix-action@13d8dd58da0234aa297dedd986986ccb8e7f3e24 # v31.11.1
         with:
           extra_nix_config: |
             experimental-features = nix-command flakes